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Update IGMP printing, removing the obsolete packet header version number &

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changing "new" and "old" to "v2" and "v1" to allow for future changes not
having to be "newer new"

Recognize Router Alert IP option
This commit is contained in:
Bill Fenner 1996-03-19 17:25:12 +00:00
parent 94ed0b7b90
commit fd732d376e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=14718
1 changed files with 42 additions and 28 deletions
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70
usr.sbin/tcpdump/tcpdump/print-ip.c
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@ -22,7 +22,7 @@
#ifndef lint
/* From: Header: print-ip.c,v 1.28 92/05/25 14:29:02 mccanne Exp $ (LBL) */
static char rcsid[] =
"$Id: /a/ncvs/src/usr.sbin/tcpdump/tcpdump/print-ip.c,v 1.4 1995/03/08 12:52:33 olah Exp $";
"$Id: print-ip.c,v 1.5 1995/06/13 17:39:23 wollman Exp $";
#endif
#include <sys/param.h>
@ -65,40 +65,46 @@ igmp_print(register const u_char *bp, register int len,
(void)printf("[|igmp]");
return;
}
switch (bp[0] & 0xf) {
case 1:
(void)printf("igmp %squery", bp[1] ? "new " : "");
if (bp[1] != 100)
printf(" [intvl %d]", bp[1]);
switch (bp[0]) {
case 0x11:
(void)printf("igmp %s query", bp[1] ? "v2" : "v1");
if (bp[1] && bp[1] != 100)
(void)printf(" [intvl %d]", bp[1]);
if (*(int *)&bp[4])
(void)printf(" [gaddr %s]", ipaddr_string(&bp[4]));
if (len != 8)
(void)printf(" [len %d]", len);
break;
case 2:
case 6:
(void)printf("igmp %sreport %s",
(bp[0] & 0xf) == 6 ? "new " : "",
case 0x12:
case 0x16:
(void)printf("igmp %s report %s",
(bp[0] & 0xf) == 6 ? "v2" : "v1",
ipaddr_string(&bp[4]));
if (len != 8)
(void)printf(" [len %d]", len);
if (bp[1])
(void)printf(" [b1=0x%x]", bp[1]);
break;
case 7:
case 0x17:
(void)printf("igmp leave %s", ipaddr_string(&bp[4]));
if (len != 8)
(void)printf(" [len %d]", len);
if (bp[1])
(void)printf(" [b1=0x%x]", bp[1]);
break;
case 3:
case 0x13:
(void)printf("igmp dvmrp");
switch(bp[1]) {
case 1:
printf(" probe");
if (len < 8)
(void)printf(" [len %d]", len);
if (vflag) {
if (len > 8)
(void)printf(" genid 0x%08x",
ntohl(*(int *)&bp[8]));
(void)printf(" [nf 0x%02x]", bp[5]);
}
if (len > 12) {
int i;
for (i = 12; i + 3 < len; i += 4) {
@ -109,6 +115,8 @@ igmp_print(register const u_char *bp, register int len,
break;
case 2:
printf(" report");
if (vflag)
(void)printf(" [nf 0x%02x]", bp[5]);
if (len < 8)
(void)printf(" [len %d]", len);
break;
@ -158,35 +166,33 @@ igmp_print(register const u_char *bp, register int len,
}
break;
case 4:
case 0x14:
printf("igmp pim %s", ipaddr_string(&bp[4]));
if (len < 8)
(void)printf(" [len %d]", len);
if (bp[1])
(void)printf(" [b1=0x%x]", bp[1]);
break;
case 15:
(void)printf("igmp mtrace %s", ipaddr_string(&bp[4]));
if (len < 8)
case 0x1e:
case 0x1f:
(void)printf("igmp mtrace%s %s",
(bp[0] == 0x1e) ? " response" : "",
ipaddr_string(&bp[4]));
if (len < 24)
(void)printf(" [len %d]", len);
if (bp[1])
(void)printf(" [b1=0x%x]", bp[1]);
break;
case 14:
(void)printf("igmp mtrace-resp %s", ipaddr_string(&bp[4]));
if (len < 8)
(void)printf(" [len %d]", len);
if (bp[1])
(void)printf(" [b1=0x%x]", bp[1]);
else if (vflag) {
(void)printf(" s=%s", ipaddr_string(&bp[8]));
(void)printf(" d=%s", ipaddr_string(&bp[12]));
(void)printf(" qid=0x%06x",
bp[21] << 16 + bp[22] << 8 + bp[23]);
}
break;
default:
(void)printf("igmp-%d", bp[0] & 0xf);
(void)printf("igmp-%d", bp[0]);
if (bp[1])
(void)printf(" [b1=0x%x]", bp[1]);
break;
}
if ((bp[0] >> 4) != 1)
(void)printf(" [v%d]", bp[0] >> 4);
}
/*
@ -271,6 +277,14 @@ ip_optprint(register const u_char *cp, int length)
ip_printroute("LSRR", cp, len);
break;
case IPOPT_RA:
printf(" RA");
if (len != 4)
printf("{%d}", len);
if (cp[2] != 0 || cp[3] != 0)
printf("[b23=%04x]",cp[2] << 8 + cp[3]);
break;
default:
printf(" IPOPT-%d{%d}", cp[0], len);
break;